Initial commit: DeepRes Go backend — bot + worker + embed service

internal/config/config.go

@@ -0,0 +1,74 @@
+// DeepRes — Telegram bot for deep research
+package config
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+)
+
+type Config struct {
+	// Telegram
+	TelegramToken string
+
+	// Database
+	DatabaseURL string
+
+	// NATS
+	NATSURL string
+
+	// SearXNG
+	SearXNGURL string
+
+	// LLM API (OpenRouter)
+	OpenRouterKey string
+	LLMModel      string
+
+	// Embeddings (E5 via sentence-transformers HTTP server)
+	EmbedURL string
+
+	// Prices in Telegram Stars
+	FastResearchCost int
+	DeepResearchCost int
+	FreeFastPerDay   int
+}
+
+func Load() *Config {
+	cfg := &Config{
+		TelegramToken:    mustEnv("TELEGRAM_TOKEN"),
+		DatabaseURL:      mustEnv("DATABASE_URL"),
+		NATSURL:          getEnv("NATS_URL", "nats://localhost:4222"),
+		SearXNGURL:       getEnv("SEARXNG_URL", "http://localhost:4000"),
+		OpenRouterKey:    mustEnv("OPENROUTER_API_KEY"),
+		LLMModel:         getEnv("LLM_MODEL", "deepseek/deepseek-v4-flash"),
+		EmbedURL:         getEnv("EMBED_URL", "http://localhost:8081"),
+		FastResearchCost: getEnvInt("FAST_COST", 1),
+		DeepResearchCost: getEnvInt("DEEP_COST", 5),
+		FreeFastPerDay:   getEnvInt("FREE_FAST_PER_DAY", 3),
+	}
+	return cfg
+}
+
+func getEnv(key, defaultVal string) string {
+	if v := os.Getenv(key); v != "" {
+		return v
+	}
+	return defaultVal
+}
+
+func getEnvInt(key string, defaultVal int) int {
+	if v := os.Getenv(key); v != "" {
+		if i, err := strconv.Atoi(v); err == nil {
+			return i
+		}
+	}
+	return defaultVal
+}
+
+func mustEnv(key string) string {
+	v := os.Getenv(key)
+	if v == "" {
+		panic(fmt.Sprintf("required environment variable %s is not set", key))
+	}
+	return v
+}